Fix migration

Signed-off-by: Arthur DANJOU <arthurdanjou@outlook.fr>

database/migrations/1625146912533_guestbook_messages.ts

@@ -11,7 +11,7 @@ export default class GuestbookMessages extends BaseSchema {
         .unsigned()
         .references('users.id')
         .onDelete('CASCADE')
-      table.text('message')
+      table.string('message')
       table.timestamps(true, true)
     })
   }

database/migrations/1625330080117_guestbook_messages.ts

@@ -0,0 +1,17 @@
+import BaseSchema from '@ioc:Adonis/Lucid/Schema'
+
+export default class GuestbookMessages extends BaseSchema {
+  protected tableName = 'guestbook_messages'
+
+  public async up() {
+    await this.schema.table(this.tableName, (table) => {
+      table.text('message')
+    })
+  }
+
+  public async down() {
+    await this.schema.table(this.tableName, (table) => {
+      table.dropColumn('message')
+    })
+  }
+}